Ion-Conducting, Supramolecular Crosslinked Elastomer with a Wide Linear Range of Strain Resistances

Bitgaram Kim, Taesung Park, Soong Ju Oh, Ji Hun Seo

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A conductive elastomer is stretchable and can exhibit ionic or electrical conductivity. However, its resistivity increases exponentially when a small number of strain changes are provided owing to irreversible internal deformation. Therefore, securing a wide range of linearity in the resistance-strain relationship is an important topic in the preparation of highly reliable conductive elastomers. Herein, an ionic conductive elastomer is prepared using 2-methoxyethyl acrylate (MA) and a molecular necklace-like polyrotaxane (PRX) cross-linker to impart reversible elastic properties. The MAPRX exhibits a superior stretchability of up to 1420% with a tensile strength of 0.52 MPa. Besides, it shows a wide range of strain-resistance linearities (∼1100%) owing to the slidable supramolecular cross-linkers. Its linear sensitivity to the provided strain makes it possible to apply it to facile wearable strain sensors with good reproducibility.

Original languageEnglish
Pages (from-to)5012-5021
Number of pages10
JournalACS Applied Polymer Materials
Issue number10
Publication statusPublished - 2021 Oct 8

Bibliographical note

Funding Information:
This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (NRF-2020R1F1A1076202 and NRF-2021R1A2C1014294).

Publisher Copyright:
© 2021 American Chemical Society.


  • conductive elastomers
  • polyrotaxanes
  • slidable cross-linkers
  • strain sensor
  • supermolecules

ASJC Scopus subject areas

  • Polymers and Plastics
  • Process Chemistry and Technology
  • Organic Chemistry


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